Evacuating and ventilating device for a water-closet



' May 16,1933. L, POLO 1,909,711

EVACUATING AND VENTILATING DEVICE FOR A WATER CLOSET Filed Sept. 19, 1951 3 Sheets- -Sheet 1 May 16, 1933. POLO 1,909,717

EVACUATING AND VENTILATING DEVICE FOR A WATER CLOSET Filed Sept. 19; 1931 3 Sheets-Sheet 2 May 16,- 1933. 1.. POLO 1,909,717

EVACUATING AND VENTILATING' DEVICE FOR A WATER CLOSET Filed Sept. 19, 1931 5 Sheets-Sheet 3 Patented Ma-y 16, 1933 PATENT OFFIC LUIGI POLO, OF GENEVA, SWITZERLAND EVACUATING AND VENTILATING DEVICE FOR A WATER-CIDSET Application filed September 19, 1931,'Seria1 No. 563,867, and in Switzerland March 28, 1931.

The object of the invention is an evacuation andventilating device for awater- -.closet. I

According to the invention, this device comprises an electric ventilator which assures the evacuating and ventilating of a water-closet, as will be evident from the following explanation and the drawings accompanying it, in which:

Figs. 1 and 2 are, by way of example, a vertical axial section and a plan view of a Water-closet.

Figs. 3, 4 and 5 are three detailed views on a larger scale, Fig. 4 being a section on IVIV and Fig. 5 being a section on VV of Fig. 3.

Figs. 6 and 7 are, by way of example, a vertical axial section and a plan view of a water-closet differing slightly from the preceding one.

Fig. 8 shows the electrical connections of the ventilator motor in'the case where this latter is of the type for an alternating sin gle-phase current with a short-circuited rotor and starting by means of an auxiliary phase."

In the examples shown in, Figs. 1 and 2, the basin 1 formed by the porcelain body 2, is surrounded by the usual seat 3. The

30 upper part of the basin is furnished with a neck 4, the opening of which is turned towards the bottom into which opens a conduit 5 carrying water under pressure which causes the water to swirl in the basin thus causing a flush action. The basin presents, at its lower end, a rectangular opening 6 intended for theevacuation of the waste matter, the frontal edge of this opening is grooved in 7.

In the upper back part of the siphonshaped conduit 8 which forms a continuation of the opening 6, a rectangular opening 9 is situated, which forms the mouth of I the duct 10 in which the air is. compressed by the centrifugal electric ventilator.

The envelope i this latter forms part of the body 2 and is furnished, on its left face, with an opening for the introduction of the rotor 13 which is closed by a screwed flange 14 on to which is fixed the electric drivlng motor 15.

The openings 6 and. 9 may be closed one after the other by a plate 16 made of aluminum for example, pivoted on its upper 19 are represented in detail and on a larger scale on ig. 3.

The three compartments of the drum 18 contain: in the first 21, a s iral spring 22;.

in the second 23, oil and in the third 24, a mercury switch.

The spiral spring 22 fixed, on the one hand, 'on the pivot 25 of the drum and, on the other hand and b means of a screw 26, on the part of the rum 18 forming art of the cock 17 This spring causes the plvot 25 to turn in the direction in'which the handle 19, which on the drawings has been supposedly lowered, should return to its onginal position. The action of the spring is therefore in the opposite direction to the arrow 20 on Fig. 4, which shows the handle of Fig. 3 seen from the right.

When the handle occupies the position represented, it is seen that the opening 27 of the cock plug is found in the direction in which the cock is closed, while by lowering the handle in the direction of the arrow 20 in such a way as to bring it into the position 19', the cock is opened by placingthe opening of the plug in the axle of the con duit. The efi'ect of the spring is therefore to close the cock when the latter has been opened by operating the handle.

In order to avoid an abrupt closing, an oil brake acting inalmost the same way as a dashpot, has'been provided in the compartment 23 ofthe drum. The sectionfof Fig. 5 across the brake gives. an idea of how it works; in the inside of this part left to right of the drum, in 28, there is oil. On the pivot 25 is placed a sail 29 turning with the pivot 25 on which it is fixed, causing the oil to be moved and, in particular, passed through the opening 30 of a wall 31 of the compartment, this wall lying according to a radius of the compartment. To the right of the opening 30, a valve 32 provided with an opening 33 smaller than the opening 30, is pivoted on a hinge 34.

When the cock is opened, the sail 29 moves a quarter of a revolution in the direction of the arrow 35, in the same way as the handle 19 of which it forms part. The movement of the oil which is found in 28 causes a part of this latter to pass through the relatively large opening 30, by lifting up the valve32 in order to pass more easily. Therefore the resistance opposed to this movement of the handle is relatively small.

When the handle is brought into the position 19 and released, the spring 22 brings it. back into its original position, thus causing the sail 29 to move in the opposite direction to the arrow 35 and the oil which has just passed through the opening 30 from on Fig. 5, to pass back again from right to left. In effecting this movement, the oil applies the valve 32 against the wall31, as represented in the drawings, then there remains only the comparatively small opening 33 which prevents a too rapid flow of the oil. The sail 29, the handle 19 and consequently the plug 27 of the cock, can only return slowly to their original position.

As may be seen, in setting in motion the handle, the cock of the cleaning valve is openedsufliciently slowly to allow the water to continue its evacuation action in the basin during a certain time, that is, long enough for the basin to be cleaned and, in releasing the handle, the cock closes still more slowly in order to maintain the water in circulation and to allow the next filling up of the siphon-shaped conduit.

The third compartment 24 of the drum turns with the pivot 25 and contains a mercury switch '36 formed of a tube containing mercury, 37, and two electrodes 38 and 39 joined to two threads 40.

This mercury switch controls the motor 15 of the electric centrifugal ventilator 11, because, as may be seen, when the handle 19 comes into the position 19', the tube of the switch 36 is turned through'an angle of 90 to the left on Figure 4, in such a way that the mercury 37 closes the circuit between the two electrodes 38 a'nd 39, the conductors 40 of which lie in the circuit of the motor.

At the same time as the water is flushed into the basin, the motor 15 of the ventilator 11 is set in motion.

pressure provided by Under ordinary circumstances, the plate 16 of Figs. 1 and 2 is applied by its own weight upon the opening 9 thereby closing it, at the same time liberating the opening 6. The cock 17 is closed and the circuit of the mercury switch 36 is consequently opened. I I

If it is desired to evacuate the waste matter and the dirty water in the basin, it is necessary to turn the sible. In doing this, the cock 17 is opened first of all, thus permitting the water to swirl in the basin 1, then, at the half turn of the handle, the mercury switch 36 is brought into action and closes the circuit of the motor 15 which is set in' motion. Then when the basin 1 has been washed by the water coming from the conduit 5, the pressure of the air compressed by the venti' lator 11 moves the plate 16 from left to right, this plate is then applied to the opening 6, in uncovering the opening 9, thereby creating a passage leading directly into 8 for the air of the ventilator 11. The water and the Waste matter which have collected at thebottom of the basin 1 and the canal 8, are completely dispelled into the evacuation conduit while the water in the conduit 5 continues to flow in the grooves 7 on the end of the plate 16.

The preceding movement having now stretched the spring 22 of the compartment 21 when the handle is released and allowed to move of its own accord, the spring brings it back into its original position, the speed of this further movement being regulated by the oil brake of the compartment 23.

The cook 17 closes slowly and when it has turned halfway, the mercury switch 36 cuts off the current of the motor 15. The ventilator 11 then continues to work by means of its own momentum and that of the motor 15, the

it gradually diminishes, the plate 16 closes itself and at the same time progressively closes the opening 9 and releases the opening 6. The water in the conduit continues to flow during the slowing down and again fills the double elbow of the siphon-shaped conduit 8 and.

closes it hydraulically to prevent a: rise of bad air into the closet. Such a rise of air cannot take place during the filling. because the ventilator continues to compress the air from top to bottom during this time, its complete cessation only taking place when the closing by the water is effected.

Besides the evacuation of the waste matter and the dirty water contained in the basin, the ventilator assures a strong ventilation of the surrounding air contained in the closet by drawing the air necessary for its working and carrying it entirely from the closet into the evacuation conduit.

The working of the water-closet represented in Figs. 6 and 7 is identical with that handle as far as posjust described. Only the construction dif-' fers in certain details.

Thus, the ventilator 11 instead of being situated in an envelope forming part of the body 2 of the water-closet, is situated in the envelope 41 made of metalsheeting and in dependent of the said body.

The plate 16 is not rectangu ar in form, but is shaped like a cask stave. This latter shape is more easily'adapted to the rounded form of the water-closet basin. Finally, the grooves 7 are replaced by a single large groove 42. This construction allows the execution of a water closet having=less por-' celain and above all, having walls of a more even thickness.

In order to set in action the ventilator l1 of either one or the other of the examples given, a motor for an alternating singlepha'se current of the short-circuited rotor type may be used, the construction of which is extremely simple and which does not de-.

mand any upkeep. In this case,'it is however necessaryto provide an auxiliary phase for starting as shown in the diagram of Fig. 8, in which the motor 15 comprises a.

principal winding 43 and an auxiliary starting winding 44.

In order that such a motor may be applied tothe difi'erent commonly used voltages while having a group of a single type, an auto-transformer 45 has been provided and acondenser 46-connected to the motor as follows: Thetwo windings 43 and 44 are joined, the first to the two clamps 47 and 48 of maximum voltage of the auto-transformer '45, and the second tothese same clamps and by means of the condenser 46 intended to produce theangular displacement necessary for the starting up process.

Several clamps are provided on the autotransformer 45, such as 49, allowing the said auto-transformer to be connected between one of these clamps and the clamp 48 on the network 50. I

Due to the fact that the condenser 46 is branched off on the clamps 47 and 48 of invariable maximum voltage of the autotransformer 45, not only-the necessity of providing different condensers for different commonly used voltages is avoided, but a considerable economy is effected because the cost price of the condenser is cheaper the greater the voltage, at -any ratewithin the limits of voltage of a few hundred volts in which the device is called into action. It has been noticed, in fact, that for a voltage of about 100 volts for example, 16 mt. were necessary while for a voltage of about 250 volts 4 mf.- were suflicient.

Now, the difi'erence in price between the condensers ment oned above easil covers the cost of the 'auto transformer, thus allowing a single group to be established which is able to function on several closed circuit voltages without its price being increased.

What I claim as my invention and desire to secure by Letters Patent of the United States of America is 1. An evacuating and ventilating device in which a body-of a water-closet, comprises a basin with an opening for the'evacuation of waste-matter, a ventilator, a further opening being provided in said body to allow the air compressed by the ventilator to enter the evacuation conduit,

and a movable plate alternately closing either the air passage or the evacuation conduit and disposed in such manner as to normally close the air passage in liberating the evacuation conduit, but being displaced under the action of the air compressed by the ventilator in order to open the air passage and close the evacuation conduit.

2. An evacuating and ventilating device,

in which a body of a water-closet, comder the action of the air compressed by the ventilator in order to open the air passage and close the evacuation conduit.

' 3. An evacuating and ventilating device for a'water-closet, comprising an electric ventilator entering into said water-closet and which assures the evacuation and the ventilation, a motor for bringing said ventilator into action, a mercury switch combined with a device which controls a water circulation in the water-closet, for controlling said motor, and a common controlling device connected with both said mercury;-

switch and said water circulation controlling a device for setting both in action.

4. An evacuating and ventilating device for a water-closet, comprising an electric ventilator which assures the evacuation and the ventilation, this ventilator being brought into action by a motor controlled by a mer cury switch combined with a device which controls a water-circulation in the watercloset, in such a way that, in order to'efi'ect' the evacuation, the water circulation is first of all opened, then the mercury swltch is closed and in order to stop the evacuation,

the switch is first of all opened and then the water circulation closed.

5. An. evacuating and ventilating device I for a water-closet, comprising an electric ventilator which assures the evacuation and ventilation, this ventilator being brought the switch is open,

into action by a motor controlled by a mercury switch combined with a device Which controls the water circulation in the water-closet, and an organ such as a spring which normally keeps this controlling device closed, while the switch is open.

6. An evacuating and ventilating device for a water-closet, comprising an electric ventilator which assures the evacuation and the ventilation, this ventilator being brought into action by a motor controlled by a mercury switch combined with a device controlling the water circulation in the water-closet, and an organ such as a spring normally keeps this controlling device closed, while t is organ acting upon the device under the control of a brake.

7. An evacuating and ventilating device for a water-closet, comprising a ventilator built into the basin of said water-closet, an electric motor for driving said ventilator,

' a water tap for said basin, and a single means for substantially simultaneously operating both said motor and said water tap.,

8. An evacuating and ventilating device for a water-closet, comprising a ventilator built into the basin of said water-closet, an electric motor for driving said ventilator, a Water tap for said basin, and a single hand-lever, operable in its movement to first open saidwater tap, to then energize said motor, to then deenergize said motor, and to then close said water tap. I

9. An evacuating and ventilating device for a water-closet, comprising a ventilator built into the basin of said water-closet, an electric motor for driving said ventilator, a water tap for said basin, a single hand-lever, operable in its movement to first open said Water tap, to then energize said motor, to

then deenergize said motor, and to then close said water tap, and resilient means to then return said lever to its rest position.

10. An evacuating and ventilating device for a Water-closet, comprising a ventilator built into the basin of said water-closet, an electric motor for driving said ventilator,

a water tap for said basin, a single handlever, operable in its movement to first open said water tap, to then energize said motor, to then deenergize said motor, and to then close said water tap, resilient means to then return said lever to its rest position, and means to retard and dampen the return of said lever to its rest position.

In testimony whereof I have signed my name to this specification.

LUIGI' POLO. 

